Houston paved its wetlands - is catastrophic flooding a result?; Whales are learning to dodge deafening military sonar; To save endangered caribou, shoot a moose; and more

Air Date: Sep 02, 2017 12:00 AM ET

Houston paved its wetlands - is flooding a result?; Is Canada prepared for a Hurricane disaster?; A Houston weather forecaster on the future of his city; Whales learn to dodge sonar; To save caribou, shoot a moose; Why does my tummy hurt when I’m nervous?